Solid state lighting device
View Patent ↗A light emission package includes at least one solid state emitter, a leadframe, and a body structure encasing a portion of the leadframe. At least one aperture is defined in an electrical lead to define multiple electrical lead segments, with at least a portion of the aperture disposed outside an exterior side wall of the package. A recess may be defined in the exterior side wall to receive a bent portion of an electrical lead. A body structure cavity may be bounded by a floor, and side wall portions and end wall portions that are separated by transition wall portions including a curved or segmented upper edge, with different wall portions being disposed at different angles of inclination.
1. A light emission package adapted for use with at least one solid state emitter, the package comprising:
a leadframe comprising a plurality of electrical leads;
a body structure encasing at least a portion of the leadframe, the body structure comprising at least one exterior side wall;
a heatsink retained by the body structure, and the heatsink being electrically isolated from each of the electrical leads; and
wherein a first of the plurality of electrical leads comprises a plurality of first electrical lead segments extending through the at least one exterior side wall from a center portion of the body structure; and
wherein each first electrical lead segment is separated from each other first electrical lead segment along the at least one exterior side wall by at least one first aperture, and at least a portion of the at least one aperture is disposed outside the at least one exterior wall.
2. The light emission package of claim 1 , wherein the at least a portion of the at least one first aperture is filled with body material within the body structure.
3. The light emission package of claim 1 , wherein the plurality of electrical leads comprises a second electrical lead, and the second electrical lead includes a plurality of second electrical lead segments extending through the at least one exterior side wall, wherein each second electrical lead segment is separated from each other second electrical lead segment along the exterior side wall by at least one second aperture, and at least a portion of the at least one second aperture is disposed outside the at least one exterior wall.
4. The light emission package of claim 3 , wherein the first electrical lead extends through a first exterior side wall of the at least one exterior side wall, and the second electrical lead extends through a second exterior side wall of the at least one exterior side wall.
5. The light emission package of claim 1 , wherein the at least one electrical lead comprises a bent portion.
6. The light emission package of claim 5 , wherein the at least one exterior side wall defines at least one recess arranged to receive the bent portion of the at least one electrical lead.
7. The light emission package of claim 1 , wherein the body structure defines a cavity, and the package further comprises at least one solid state emitter disposed within the cavity.
8. The light emission package of claim 7 , comprising an electrostatic discharge protection device in electrical communication with the at least one solid state emitter.
9. The light emission package of claim 7 , further comprising a submount, wherein the at least one solid state emitter is mounted to the submount.
10. A lighting apparatus comprising at least one light emission package according to claim 1 .
11. A light emission package adapted for use with at least one solid state emitter, the package comprising:
a leadframe comprising a plurality of electrical leads;
a body structure encasing at least a portion of the leadframe, the body structure defining at least one exterior side wall;
a heatsink retained by the body structure, and the heatsink being electrically isolated from the electrical leads;
wherein at least a portion of a first electrical lead of the plurality of electrical leads extends through the at least one exterior side wall; and
wherein the at least one exterior side wall defines at least one recess arranged to receive a bent portion of the first electrical lead.
12. The light emission package of claim 11 , wherein the first electrical lead extends through a first exterior side wall of the at least one exterior side wall, and the plurality of electrical leads comprises a second electrical lead extending through a second exterior side wall of the at least one exterior side wall.
13. The light emission package of claim 11 , wherein:
the first electrical lead of the at least one electrical lead comprises a plurality of first electrical lead segments extending through the at least one exterior side wall, wherein each first electrical lead segment is separated from each other first electrical lead segment along the at least one exterior side wall by at least one first aperture, and at least a portion of the at least one first aperture is disposed outside the at least one exterior wall.
14. A lighting apparatus comprising at least one light emission package according to claim 11 .
15. A method for fabricating the light emission device of claim 1 , the method comprising:
defining in the leadframe at least one first aperture to yield the plurality of first electrical lead segments;
forming a body structure to (i) encase at least a portion of the leadframe and (ii) form the at least one exterior side wall; and
bending the plurality of first electrical lead segments.
16. A method for fabricating the light emission package of claim 11 , the method comprising:
forming the body structure to (i) encase at least a portion of the leadframe and (ii) form the at least one exterior side wall; and
bending the at least one electrical lead to position at least a portion of the at least one electrical lead within the at least one recess.
17. The light emission package of claim 6 , wherein the recess arranged to receive the bent portion comprises a depth relative to the exterior side wall.
18. The light emission package of claim 11 , wherein the first electrical lead extends from a center portion of the body structure.
19. The light emission package of claim 18 , wherein the recess is located adjacent to where the first electrical lead extends from the body structure, and the recess comprises a depth relative to the exterior side wall.
20. A light emission package adapted for use with at least one solid state emitter, the package comprising:
a leadframe comprising a plurality of electrical leads, wherein at least one electrical lead comprises a bent portion;
a body structure encasing at least a portion of the leadframe, the body structure comprising at least one exterior side wall, the exterior side wall comprising at least one recess arranged to receive the bent portion of the at least one electrical lead;
a heatsink retained by the body structure, and the heatsink being electrically isolated from each of the electrical leads; and
wherein a first of the plurality of electrical leads comprises a plurality of first electrical lead segments extending through the at least one exterior side wall from a center portion of the body structure.